Home / 3,280.90-4,923.40-1,333.11

Finding the Fourth Proportional to 3,280.90, 4,923.40 and 1,333.11

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Solution

The fourth proportional to 3,280.90, 4,923.40 and 1,333.11 is: 2,000.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.90 : 4,923.40 = 1,333.11 : x
  2. Step 2: Convert to fraction form
    3,280.90/4,923.40 = 1,333.11/x
  3. Step 3: Cross multiply
    3,280.90x = 4,923.40 × 1,333.11
  4. Step 4: Simplify right side
    3,280.90x = 6,563,415.70
  5. Step 5: Solve for x
    x = 6,563,415.70/3,280.90
  6. Step 6: Final answer
    x = 2,000.49

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.